Listening to P25 system, missing transmissions

[UFEMTFF]

I'm listening to Alachua County Florida's P25 system, and i have a portable on the system right next to my scanner. I seem to be missing some radio transmissions, even when there seems to be no activity on the scanner.

At first I just thought it was activity on another TG (i only have 10 programmed), but I have been missing some when there is no other activity. Do I have to do something with a delay or timing or something?

I'm using a Uniden BCD996T if that helps.

 

[wsmoore]

The GRU system is not a P-25 system, so it needs to be set for Motorola Type 2 800.It is a (3600)P-16 system that uses P-25 voice.If it was a true P-25 System it would use 9600 bd.If that doesn't work make sure you have all freq in or just use CC only trunking.Also if you have a system radio next to the scanner it will desense the scanner so you have to seperate them by a couple of feet.

 

[UFEMTFF]

The GRU system is not a P-25 system, so it needs to be set for Motorola Type 2 800.It is a (3600)P-16 system that uses P-25 voice.If it was a true P-25 System it would use 9600 bd.If that doesn't work make sure you have all freq in or just use CC only trunking.

Alright, thanks. Will that help with clarity isssues as well? Also, some of the talkgroups ARE digital, but that setting will still work with them?

 

[crazyboy]

Alright, thanks. Will that help with clarity isssues as well? Also, some of the talkgroups ARE digital, but that setting will still work with them?

Yes if you reread what hes saying, he said that it is a p-16 system that uses p25 voice. (digital)

 

[UFEMTFF]

Well I went to change it, and the only settings the 996 has is "Moto type I" or "moto type II / P25".

Mine was already set to the latter. Any more sugguestions?

 

[wsmoore]

Did you move the system radio away from the scanner?Double check and make sure you have it set to control channel only .How far are you from the system?

 

[WayneH]

I'm willing to bet your programming is fine based on what you've said so far.

Unidens will miss talkgroup calls once and a while. It happens, well a lot more than GREs, but it shouldn't be happening constantly.

-Wayne

 

[UPMan]

You didn't mention whether the site was correctly programmed as a "800 MHz Standard" (the settings you mentioned are system settings, not site).

 

[WayneH]

You didn't mention whether the site was correctly programmed as a "800 MHz Standard" (the settings you mentioned are system settings, not site).

Versus what? He seems to get some traffic so that would rule that out.

-Wayne

 

[W4KRR]

Versus what? He seems to get some traffic so that would rule that out.

-Wayne

Versus 800 MHz Splinter.

 

[UFEMTFF]

I'm willing to bet your programming is fine based on what you've said so far.

Unidens will miss talkgroup calls once and a while. It happens, well a lot more than GREs, but it shouldn't be happening constantly.

-Wayne

I'd say I miss 1 in 5 transmissions, even when there isn't a lot of talking. What is the delay used for, and what should I have it set at?

 

[WayneH]

Versus 800 MHz Splinter.

It's an 866 system so it wouldn't matter whether he was in splinter or normal.

UFEMTFF, the delay won't help you. The hold will tell the scanner to scan the control channel for that amount of time and the delay will hold onto the talkgroup after it was active. Maybe try setting the hold for longer.

-Wayne

 

[W4KRR]

It's an 866 system so it wouldn't matter whether he was in splinter or normal.-Wayne

Okay; what about systems that have both frequencies in the 866-868 MHz range, and frequencies in the 851-866 MHz range? Splinter or normal?

 

[WayneH]

Okay; what about systems that have both frequencies in the 866-868 MHz range, and frequencies in the 851-866 MHz range? Splinter or normal?

Splinter. The area you are in will define Splinter use or not. So basically every 800MHz freq (less than 866) would be offset regardless of its use or purpose. The freqs in the 866 sub-band already have their own control channel freq IDs so it wouldn't apply to them. AFAIK it only applies to States that border Mexico.

Anywho, OT. Check out the search for more info.

-Wayne

 

[scanbc780]

I posted this in another thread. Try this I am sure your problems will be resolved.

http://radioreference.com/forums/showpost.php?p=338666&postcount=15